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Cambria Environmental Technology, Inc. B O R I N GMI E L L LOG <br /> 1 144 - 651h St_ <br /> Oakland, CA 94608 <br /> Telephone: (510) 420-0700 <br /> Fox. (510) 420-9170 <br /> rLIENCLIENT NAME Equilon Enterprises LLC_ _ BORING/WELL NAME EW-2 <br /> 1.,RpJOBISITE=NAME Ripon-341 _ DRILLING STARTED 24-Feb-99 <br /> LOCATION 341 Main Street Ri on Califomia DRILLING COMPLETED 24-Feb-99 <br /> PROJECT NUMBER 240-0324 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER _ Gregg Drilling GROUND SURFACE ELEVATION <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION NA <br /> BORING DIAMETER 10" SCREENED INTERVAL 22 to 37 ft bgs _ <br /> LOGGED BY B.Jakub DEPTH TO WATER(First Encountered) 27.4 ft(24-Feb-99) <br /> REVIEWED BY 0. Ratchye, PE _. DEPTH TO WATER(Static) NA <br /> REMARKS Hand au eyed to 5'b s'located SE corner of gasoline USTs. <br /> CID <br /> E ca <br /> E cz =-- (6 U <br /> d i,- u3 Z it to �CD Q <br /> C1 0 ii w o_ U <p LITHOLOGIC DESCRIPTION 1-- <br /> =) WELL DIAGRAM <br /> d m0 < w fl� C¢�7J Ow <br /> SP 0.5 <br /> Siltv,$AND:(SM); light olive brown(2.5Y516);medium <br /> dense;damp;33%silt,65%tine to coarse grained sand, <br /> 2%fine grained gravel;high to moderate estimated <br /> permeability;mica. <br /> 0 3'-moderate estimated permeability; no mica. <br /> Portland Type <br /> 5 1/l l <br /> 4 <br /> 5 EW-2 @ 6.5'-45%silt,55%fine to very fine grained sand;trace <br /> -6.5 SM mica. <br /> 11 <br /> 12 10 <br /> 15 <br /> 4"diam., <br /> 37 14.2 Schedule 40 <br /> 50 Sandy SILT;(ML);light olive brown(2.5Y514);hard; PVC <br /> 15 damp;3%clay,52%silt,45%very fine grained sand; <br /> slight plasticity;low to moderate estimated permeability. <br /> ML <br /> 19.0 Bentonite Seal <br /> 26SAND;(SW);light olive brown(2.5Y5/3);dense; moist <br /> 27 38 20 to wet; 10%silt,90%very tine to medium grained sand; <br /> o EW-2 mica;quartz- <br /> -20 Monterey <br /> SW Sand#2112 <br /> W <br /> a <br /> a 24.0 <br /> 36 ML Sandy SILT;(ML);olive brown(2.5Y4/4);hard;moist to <br /> 50 25 wet\gral,necl'sando <br /> clay80%silt, 18%very fine grained sand;slight 24'9 <br /> oplasticity;low estimated permeability;occasional fine <br /> ! n throughout <br /> oSM ;: Silly SAND;(SM);30%silt,70%very fine to fine 2/24/9957 <br /> m grained sand;grades to sand. <br /> Z <br /> i7 <br /> ..... _ — — — _ 29.0 <br /> a� SIA <br /> 30 _D;(SW);light olive brown(2.5Y5/4);dense; 4'-di am., <br /> 3 saturated;10%silt,90%medium to fine grained sand; 0.010"Slotted <br /> mica;quartz. Schedule 40 <br /> i k PVC <br /> SW <br /> Q <br /> a <br /> 17 35.0 <br /> 3 35 <br /> Continued Next Page RAGE r of z <br />